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Table
5.
Equipment Performance Checklist (Cont'd)
STEP
ITEM
ACTION OR CONDITION
PERFORMANCE STANDARD
4.
d.
Zero-balance the bridge
d. NULL INDICATOR
(Cont'd)
as described in para¬
pointer dips within one
graph 3.5.
subdivision of zero on
LO sector of dial scale.
e,
Set meter switch to
e. NULL INDICATOR
ZERO CENTER.
pointer deflects toward
midscale.
f.
If necessary, adjust C
f. NULL INDICATOR
ZERO FINE control to
pointer is at midscale
center the NULL
INDICATOR pointer.
increment.
g.
Set CONDUCTANCE
g. NULL INDICATOR
control to 100 pmhos on
pointer deflects away
the G-scale.
from midscale.
h.
Adjust PHASE control until h. NULL INDICATOR
NULL INDICATOR pointer
pointer is at midscale
is centered.
increment.
i.
Set CONDUCTANCE
i. NULL INDICATOR
control to 650 pmhos on
pointer deflects away
the G-scale.
from midscale.
j.
Adjust CAPACITANCE
j. Capacitance is within
control until NULL
INDICATOR pointer is
centered on midscale
increment and read the
CAPACITANCE dial
± 0.03 PF.
(times the 0.001 MULTIPLY
C setting).
k.
Set CAPACITANCE and
CONDUCTANCE
controls back to zero.
k. None.
75D
b-370
51
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